What is the payment password of Meituan's bank card?

The explanation of this sentence is as follows:

Meituan has added the password of bank card payment to ensure the safety of funds when users use bank card payment on Meituan platform. When the user binds the bank card to Meituan, he needs to set the payment password, and he needs to enter the password for verification when paying, so as to ensure that only the cardholder can make payment. The payment password is a six-digit password set by the user himself. Users can set an easy-to-remember and safe password and keep it properly.